<template>
  <view class="goods-item">
    <!-- 商品左侧图片区域 -->
    <view class="goods-item-left">
      <radio
      :checked="goods.goods_state"
      color="#C00000"
      v-if="showRadio"
      @click="radioClickHandler"
      ></radio>
      <image :src="goods.goods_small_logo || defaultPic" class="goods-pic"></image>
    </view>
    <!-- 商品右侧信息区域 -->
    <view class="goods-item-right">
      <!-- 商品标题 -->
      <view class="goods-name">{{goods.goods_name}}</view>
      <view class="goods-info-box">
        <!-- 商品价格 -->
        <view class="goods-price">￥{{goods.goods_price | filterPrice}}</view>
         <!-- 商品数量 -->
          <uni-number-box
          :min="1"
          :value="goods.goods_count"
          @change="numChangeHandler"
          v-if="showNum"
          ></uni-number-box>
      </view>
    </view>
    </view>
</template>

<script>
  export default {
    name:"mygoods",
    props:{
      goods: {
        type: Object,
        required:true
      },
      // 是否展示图片左侧的 radio
      showRadio: {
        type: Boolean,
        // 如果外界没有指定 show-radio 属性的值，则默认不展示 radio 组件
        default: false,
      },
       // 是否展示价格右侧的 NumberBox 组件
      showNum: {
        type: Boolean,
        default: false,
      },
    },
    data() {
      return {
        // 默认的空图片
        defaultPic: 'https://img3.doubanio.com/f/movie/8dd0c794499fe925ae2ae89ee30cd225750457b4/pics/movie/celebrity-default-medium.png',
        // 总数量，用来实现分页
        total: 0,
      };
    },
    filters:{
      filterPrice(num) {
        return Number(num).toFixed(2)
      }
    },
    methods:{
      radioClickHandler() {
        this.$emit('radio-change', {
              // 商品的 Id
              goods_id: this.goods.goods_id,
              // 商品最新的勾选状态
              goods_state: !this.goods.goods_state
            })
      },
      // 商品的数量发生了变化
      numChangeHandler(val) {
        // 通过 this.$emit() 触发外界通过 @ 绑定的 num-change 事件
            this.$emit('num-change', {
              // 商品的 Id
              goods_id: this.goods.goods_id,
              // 商品的最新数量
              goods_count: +val
            })
      }
    }
  }
</script>

<style scoped lang="scss">
.goods-item {
  display: flex;
  // 让 goods-item 项占满整个屏幕的宽度
  width: 750rpx;
  // 设置盒模型为 border-box
  box-sizing: border-box;
  padding: 10px 5px;
  border-bottom: 1px solid #f0f0f0;

  .goods-item-left {
    margin-right: 5px;
    display: flex;
    justify-content: space-between;
    align-items: center;

    .goods-pic {
      width: 100px;
      height: 100px;
      display: block;
    }
  }

  .goods-item-right {
    display: flex;
    flex-direction: column;
    justify-content: space-between;

    .goods-name {
      font-size: 13px;
    }
    .goods-info-box {
        display: flex;
        align-items: center;
        justify-content: space-between;
      }
    
    .goods-price {
      font-size: 16px;
      color: #c00000;
    }
  }
}
</style>
